公开(公告)号：US07542677B2

公开(公告)日：2009-06-02

申请号：US11892302

申请日：2007-08-21

申请人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

发明人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

IPC分类号： H04J14/02 ,  H04B10/12 ,  H04B10/001

CPC分类号： H04B10/25253 ,  H04B2210/256 ,  H04J14/0206 ,  H04J14/0213

摘要： Dispersion compensation values are set so as to be transmittable to any path groups in a WDM optical communication system having OADM nodes, which includes transmitting-end and receiving-end terminal nodes; a WDM optical communication transmission line including a plurality of spans each having an optical fiber, the plurality of spans joining the transmitting-end and receiving-end terminal nodes; and a plurality of add drop multiplexing (OADM) nodes disposed on the optical communication transmission line; wherein when taking as the reference a residual dispersion target value of between the transmitting-end terminal and receiving-end terminal nodes, a residual dispersion target value for a node segment between one of the terminal nodes and one of the add drop multiplexing (OADM) nodes and a residual dispersion target value for a node-to-node segment between two of the add drop multiplexing (OADM) nodes are set so as to be proportional to ratios of the span counts in the node segment and in the node-to-node segment, respectively, to the total span count between the transmitting-end and receiving-end terminal nodes.

摘要翻译： 色散补偿值被设置为可以发送到具有包括发送端和接收端终端节点的OADM节点的WDM光通信系统中的任何路径组; WDM光通信传输线，其包括多个具有光纤的跨度，所述多个跨接器连接所述发送端和接收端终端节点; 以及设置在所述光通信传输线上的多个添加分集复用（OADM）节点; 其中，当以发送端终端和接收端终端节点之间的残留分散目标值作为参考时，在一个终端节点之间的节点的剩余分散目标值与加法分集复用（OADM）之一之间， 节点和两个添加分集复用（OADM）节点之间的节点到节点分段的残余分散目标值被设置成与节点分段和节点到节点中的跨度计数的比率成比例， 节点段分别为发送端和接收端终端之间的总宽度计数。

公开(公告)号：US07366422B2

公开(公告)日：2008-04-29

申请号：US11085419

申请日：2005-03-22

申请人： Motoyoshi Sekiya ,  Yuuichi Kawahata

发明人： Motoyoshi Sekiya ,  Yuuichi Kawahata

IPC分类号： H04B10/12

CPC分类号： H01L31/14 ,  G02B6/29358 ,  G02B6/29394 ,  G02B6/29395 ,  G02B6/29398 ,  G02B6/4246 ,  H04B10/25133

摘要： A dispersion compensating device having a VIPA plate which is an optical component, a lens, and a mirror includes high reflectivity side monitor means for monitoring the light that is input into the VIPA plate and emitted from the first reflecting surface. By this, the passage characteristics of the dispersion compensating device (VIPA) can be equalized to the input light wavelength (output wavelength of light transmitter) in a highly stable manner while restraining the loss of main signal light to the minimum.

摘要翻译： 具有作为光学部件的VIPA板，透镜和反射镜的色散补偿装置包括高反射率侧监视装置，用于监视输入到VIPA板并从第一反射表面发射的光。 由此，可以以高度稳定的方式将色散补偿装置（VIPA）的通过特性与输入光波长（光发送器的输出波长）相等，同时将主信号光的损失抑制到最小。

公开(公告)号：US07359645B2

公开(公告)日：2008-04-15

申请号：US10945904

申请日：2004-09-22

申请人： Takuya Miyashita ,  Motoyoshi Sekiya ,  Ryosuke Goto

发明人： Takuya Miyashita ,  Motoyoshi Sekiya ,  Ryosuke Goto

IPC分类号： H04B10/12 ,  H04B10/00

CPC分类号： H04B10/25253

摘要： In an optical transmission system, each of optical transmission devices for transmitting wavelength-multiplexed light measures a real dispersion quantity. On the basis the real dispersion quantity measured in a measurement step and design dispersion quantities of respective transmission spans, a management control section computes compensation quantities of the respective transmission spans. The management control section notifies the compensation quantities computed in a computation step to the respective optical transmission devices. On the basis of the notified compensation quantities, the respective optical transmission devices compensate for the dispersion quantities. Thereby, optimal dispersion compensating values using a bypass design are acquired individually for optical paths included in WDM light. Dispersion is automatically, dynamically compensated, thereby inhibiting deterioration of a signal.

摘要翻译： 在光传输系统中，用于发送波长多路复用光的每个光传输装置测量实际的色散量。 基于在测量步骤中测量的实际色散量和各个传输跨度的设计色散量，管理控制部分计算各个传输跨度的补偿量。 管理控制部将计算步骤计算出的补偿量通知各光传输装置。 基于通知的补偿量，各个光传输装置补偿分散量。 因此，对于包括在WDM光中的光路单独获取使用旁路设计的最佳色散补偿值。 色散自动地进行动态补偿，从而抑制信号的劣化。

公开(公告)号：US07212285B2

公开(公告)日：2007-05-01

申请号：US10992014

申请日：2004-11-19

申请人： Ryosuke Goto ,  Motoyoshi Sekiya

发明人： Ryosuke Goto ,  Motoyoshi Sekiya

IPC分类号： G01J3/28

CPC分类号： G01J3/18 ,  G01J3/027 ,  G01J3/04 ,  G01J3/1895 ,  G01J3/453

摘要： An optical measurement device capable of improving optical spectrum measurement accuracy without the need to structurally decrease a slit width. A diffraction grating for dispersing measurement light into respective different wavelengths is rotated in a given direction to produce diffracted light of selected wavelengths. A focusing lens converges the diffracted light to produce a converged beam. A slit control section varies the slit width at a constant scan speed to open or close the slit, thereby varying the passing bandwidth for the converged beam. A light receiving/measuring section receives the light passed through the slit, obtains a level function indicative of the power level of the received light that varies with change in optical frequency, and differentiates the level function by the scan speed to reproduce the spectrum profile of the measurement light.

摘要翻译： 一种能够提高光谱测量精度而不需要在结构上减小狭缝宽度的光学测量装置。 用于将测量光分散到各个不同波长的衍射光栅在给定方向上旋转以产生所选波长的衍射光。 聚焦透镜会聚衍射光以产生会聚光束。 狭缝控制部分以恒定的扫描速度改变狭缝宽度以打开或关闭狭缝，从而改变会聚束的通过带宽。 光接收/测量部分接收通过狭缝的光，获得指示随着光频率的变化而变化的接收光的功率电平的电平函数，并且将电平函数除以扫描速度，以再现频谱分布 测量灯。

公开(公告)号：US20060127101A1

公开(公告)日：2006-06-15

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/00

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入引脚的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US20050219682A1

公开(公告)日：2005-10-06

申请号：US10945272

申请日：2004-09-21

申请人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

发明人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

IPC分类号： G02F1/35 ,  G02F1/365 ,  H01S3/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/13 ,  H01S3/16 ,  H01S3/30 ,  H04B10/07 ,  H04B10/29 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02

CPC分类号： H01S3/06758 ,  H01S3/005 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/1305 ,  H01S3/1608 ,  H01S2301/04 ,  H04B10/2941 ,  H04B2210/003

摘要： The present invention relates to an optical amplifier and, in particular, it relates to multistage optical amplification having a feature for compensating for the tilt that is generated when a signal having a plurality of optical wavelengths and the like according to a wavelength division multiplexing (WDM) method is amplified in a wide bandwidth. The multistage optical amplifier comprises: a plurality of optical amplifiers that are connected in a multistage manner; and a common control section for commonly controlling pumping light powers of said plurality of optical amplifiers, wherein said common control section includes: tilt detection means for detecting amounts of tilt of each of said plurality of optical amplifiers; and tilt cancellation means for controlling the pumping light powers of said plurality of optical amplifiers so that the amounts of tilt of each of the optical amplifiers detected by said tilt detection means cancel each other.

摘要翻译： 光放大器技术领域本发明涉及一种光放大器，特别涉及具有补偿根据波分多路复用（WDM）具有多个光波长等的信号时产生的倾斜的特征的多级光放大 ）方法在宽带宽中被放大。 多级光放大器包括：以多级方式连接的多个光放大器; 以及用于共同控制所述多个光放大器的泵浦光功率的公共控制部分，其中所述公共控制部分包括：倾斜检测装置，用于检测所述多个光放大器中的每一个的倾斜量; 以及用于控制所述多个光放大器的泵浦光功率的倾斜消除装置，使得由所述倾斜检测装置检测的每个光放大器的倾斜量相互抵消。

公开(公告)号：US06930824B1

公开(公告)日：2005-08-16

申请号：US09080909

申请日：1998-05-19

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： G02B6/34 ,  H04B10/18 ,  H04J14/02 ,  H04B10/17 ,  H01S3/30

CPC分类号： H04J14/0224 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength λ0 of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用并传输具有不同波长的多个信道的光信号时，包括预定带宽的四波混频抑制保护带包括零色散波长λ<0> 设置光纤，并且多路复用的多个信道的信号光波被布置在保护带外部的短波长侧和较长波长侧中的一个上。

公开(公告)号：US06243176B1

公开(公告)日：2001-06-05

申请号：US08917292

申请日：1997-08-25

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： H04J1402

CPC分类号： G02B6/29377 ,  G02B6/4215 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02 ,  H04J14/0224

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength &lgr;&thgr; of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用和发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长的预定带宽的四波混频抑制保护带，并且信号光 要复用的多个信道的波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。

公开(公告)号：US5754322A

公开(公告)日：1998-05-19

申请号：US781511

申请日：1997-01-08

申请人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

发明人： George Ishikawa ,  Hiroshi Nishimoto ,  Hiroki Ooi ,  Motoyoshi Sekiya ,  Hiroaki Tomofuji

IPC分类号： H04B10/2507 ,  H04B10/071 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/2537 ,  H04B10/2563 ,  H04J14/02 ,  H04J14/08 ,  H04L7/00 ,  H04L7/027 ,  H04L7/033 ,  H04L7/06 ,  H04Q11/00 ,  H04Q11/04

CPC分类号： H04B10/25133 ,  H04B10/0795 ,  H04B10/07957 ,  H04B10/0797 ,  H04B10/0799 ,  H04B10/25137 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/66 ,  H04B10/67 ,  H04B10/675 ,  H04J14/086 ,  H04L7/0037 ,  H04L7/0075 ,  H04Q11/0001 ,  G02F2203/21 ,  H04B2210/252 ,  H04B2210/254 ,  H04J14/02 ,  H04J14/0298 ,  H04J14/08 ,  H04L7/027 ,  H04L7/06

摘要： The invention provides a technique for optimizing transmission conditions to achieve large-capacity transmission, and also provides peripheral techniques for the practical implementation of optical multiplexing that makes large-capacity transmission possible. A transmission characteristic is measured in a transmission characteristic measuring section, and control of signal light wavelength in a tunable light source, control of the amount of prechirping, control of the amount of dispersion compensation, and/or control of optical power are performed to achieve the best transmission characteristic. Wavelength dispersion is deliberately introduced by a dispersion compensator, to reduce nonlinear effects. A tunable laser is used to optimize signal light wavelength for each optical amplification repeater section. Peripheral techniques, such as drift compensation, clock extraction, optical signal channel identification, clock phase stabilization, etc., are provided for the implementation of optical multiplexing.

公开(公告)号：US5696614A

公开(公告)日：1997-12-09

申请号：US781137

申请日：1997-01-09

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： H04J14/00 ,  G02B6/34 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/299 ,  H04J14/02 ,  H04B10/00

CPC分类号： G02B6/29377 ,  G02B6/4215 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04J14/0224 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength .lambda..sub.0 of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用并发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长λ0的预定带宽的四波混频抑制保护带，并且信号 要复用的多个信道的光波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。